Earthquakes on December 28, 2020
285
EARTHQUAKES on December 28, 2020
24-hour UTC period · USGS data
LARGEST: M5.7 — southeast Indian Ridge
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
42
M3.0–3.9
5
M2.0–2.9
69
M1.0–1.9
162
Activity Summary
285
Total earthquakes
~250
Daily average
Normal
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.7
southeast Indian Ridge
04:32 UTC · 10.0 km deep
5.4
Owen Fracture Zone region
05:46 UTC · 10.0 km deep
Felt by 1
5.1
170 km S of Tomohon, Indonesia
07:31 UTC · 51.8 km deep
5.1
southeast Indian Ridge
04:30 UTC · 10.0 km deep
5.0
Bougainville region, Papua New Guinea
23:34 UTC · 35.0 km deep
5.0
94 km SE of Lata, Solomon Islands
20:03 UTC · 51.8 km deep
5.0
178 km ESE of Sarangani, Philippines
04:46 UTC · 96.3 km deep
4.9
southeast Indian Ridge
06:25 UTC · 10.0 km deep
Earthquake Map — December 28, 2020
All Earthquakes — December 28, 2020
Showing 30 of 123 (filtered from 285)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-12-28 2020-12-28 23:38:12 UTC | 3.4md | 5 km SSW of Indios, Puerto Rico 17.947°, -66.844° | 14.0 km | 7 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 earthquake was recorded 5 km SSW of Indios, Puerto Rico on December 28, 2020 at 23:38 UTC. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 23:34:07 UTC | 5.0mb | Bougainville region, Papua New Guinea -6.548°, 154.907° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:34 UTC on December 28, 2020, a magnitude 5.0 tremor occurred in the Bougainville region, Papua New Guinea. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 23:26:52 UTC | 2.8md | 2 km E of P?hala, Hawaii 19.199°, -155.457° | 33.2 km | 3 | - | - | ✓ Reviewed | USGS → |
December 28, 2020 brought a magnitude 2.8 earthquake 2 km E of P?hala, Hawaii, logged at 23:26 UTC. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 23:06:20 UTC | 2.0ml | 38 km WSW of Haines, Alaska 59.057°, -136.028° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 38 km WSW of Haines, Alaska on December 28, 2020 at 23:06 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:55:28 UTC | 4.1mb | 32 km WSW of Mandráki, Greece 36.456°, 26.821° | 125.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded 32 km WSW of Mandráki, Greece on December 28, 2020 at 22:55 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:54:22 UTC | 2.7md | 5 km S of Guánica, Puerto Rico 17.924°, -66.909° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2020, worldwide seismic activity registered a magnitude 2.7 earthquake 5 km S of Guánica, Puerto Rico at 22:54 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:50:03 UTC | 4.1mb | 170 km S of Sarangani, Philippines 3.857°, 125.477° | 114.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 170 km S of Sarangani, Philippines with origin time 22:50 UTC on December 28, 2020. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:45:14 UTC | 4.4mb | 54 km SSW of Champerico, Guatemala 13.821°, -92.045° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
On December 28, 2020 at 22:45 UTC, a magnitude 4.4 earthquake struck 54 km SSW of Champerico, Guatemala. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:24:46 UTC | 4.2mb | south of the Fiji Islands -24.705°, 179.565° | 609.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected south of the Fiji Islands on December 28, 2020, with origin time 22:24 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:23:39 UTC | 2.9ml | 16 km W of Stanley, Idaho 44.214°, -115.148° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 16 km W of Stanley, Idaho at 22:23 UTC on December 28, 2020. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:14:35 UTC | 3.5md | 50 km WSW of Stella, Puerto Rico 18.161°, -67.693° | 145.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2020 at 22:14 UTC, a magnitude 3.5 earthquake struck 50 km WSW of Stella, Puerto Rico. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:10:53 UTC | 2.5md | 5km NNE of East Quincy, CA 39.971°, -120.874° | 3.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 5km NNE of East Quincy, CA on December 28, 2020 at 22:10 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 22:08:04 UTC | 2.5ml | 68 km WNW of Aleneva, Alaska 58.297°, -153.988° | 62.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 68 km WNW of Aleneva, Alaska with origin time 22:08 UTC on December 28, 2020. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 21:50:20 UTC | 4.2mb | 111 km ESE of Kokopo, Papua New Guinea -4.691°, 153.214° | 59.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 111 km ESE of Kokopo, Papua New Guinea came in on December 28, 2020 at 21:50 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 21:47:36 UTC | 4.4mb | 31 km WSW of Buenaventura, Colombia 3.448°, -77.253° | 88.5 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 31 km WSW of Buenaventura, Colombia on December 28, 2020 at 21:47 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 21:32:34 UTC | 2.2ml | 4km NE of Delta, B.C., MX 32.376°, -115.165° | 19.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 4km NE of Delta, B.C., MX with origin time 21:32 UTC on December 28, 2020. It arrived roughly 7 hours after a larger magnitude 3.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 20:14:04 UTC | 2.0ml | 37 km NW of Beluga, Alaska 61.386°, -151.554° | 71.2 km | - | - | - | ✓ Reviewed | USGS → |
December 28, 2020 brought a magnitude 2.0 earthquake 37 km NW of Beluga, Alaska, logged at 20:14 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 20:05:37 UTC | 2.2ml | 3 km ENE of Lake Marcel-Stillwater, Washington 47.710°, -121.876° | 7.3 km | 51 | II | - | ✓ Reviewed | USGS → |
On December 28, 2020, worldwide seismic activity registered a magnitude 2.2 earthquake 3 km ENE of Lake Marcel-Stillwater, Washington at 20:05 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 9 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 20:03:26 UTC | 5.0mb | 94 km SE of Lata, Solomon Islands -11.376°, 166.360° | 51.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.0 earthquake 94 km SE of Lata, Solomon Islands at 20:03 UTC on December 28, 2020. The event was offshore. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 19:56:01 UTC | 4.1mb | 73 km E of Kokopo, Papua New Guinea -4.433°, 152.922° | 81.7 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2020, worldwide seismic activity registered a magnitude 4.1 earthquake 73 km E of Kokopo, Papua New Guinea at 19:56 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 19:33:06 UTC | 2.5ml | 99 km SSE of Sand Point, Alaska 54.575°, -159.700° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2020, worldwide seismic activity registered a magnitude 2.5 earthquake 99 km SSE of Sand Point, Alaska at 19:33 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 7 hours earlier. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 19:23:21 UTC | 4.7mb | 62 km SSW of Shing?, Japan 33.191°, 135.792° | 441.9 km | 1 | - | - | ✓ Reviewed | USGS → |
December 28, 2020 brought a magnitude 4.7 earthquake 62 km SSW of Shing?, Japan, logged at 19:23 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:46:38 UTC | 2.4ml | 26 km NNE of Larsen Bay, Alaska 57.769°, -153.877° | 40.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 26 km NNE of Larsen Bay, Alaska with origin time 18:46 UTC on December 28, 2020. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:29:34 UTC | 2.2md | 8 km SSW of P?hala, Hawaii 19.132°, -155.520° | 30.1 km | - | - | - | Auto | USGS → |
December 28, 2020 brought a magnitude 2.2 earthquake 8 km SSW of P?hala, Hawaii, logged at 18:29 UTC. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:22:44 UTC | 4.3mb | Kuril Islands 46.479°, 152.548° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
December 28, 2020 brought a magnitude 4.3 earthquake near Kuril Islands, logged at 18:22 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:19:56 UTC | 2.4ml | 99 km SSE of Sand Point, Alaska 54.582°, -159.658° | 23.2 km | - | - | - | ✓ Reviewed | USGS → |
On December 28, 2020, worldwide seismic activity registered a magnitude 2.4 earthquake 99 km SSE of Sand Point, Alaska at 18:19 UTC. Coming 6 hours after a magnitude 2.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:15:50 UTC | 4.2mb | 43 km ESE of Nikolski, Alaska 52.743°, -168.308° | 38.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 43 km ESE of Nikolski, Alaska on December 28, 2020 at 18:15 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:14:35 UTC | 2.1ml | 64 km WNW of Ninilchik, Alaska 60.326°, -152.689° | 113.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 64 km WNW of Ninilchik, Alaska with origin time 18:14 UTC on December 28, 2020. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 18:13:14 UTC | 3.6ml | 101 km ESE of Adak, Alaska 51.542°, -175.266° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
December 28, 2020 brought a magnitude 3.6 earthquake 101 km ESE of Adak, Alaska, logged at 18:13 UTC. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-28 2020-12-28 16:56:54 UTC | 2.4ml | 27 km WSW of Elfin Cove, Alaska 58.118°, -136.795° | 6.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 16:56 UTC on December 28, 2020, a magnitude 2.4 tremor occurred 27 km WSW of Elfin Cove, Alaska. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
Legend:
Mag: Magnitude (magType = ml, mb, mw, etc.)
Felt: Number of DYFI felt reports
MMI: Modified Mercalli Intensity (I-X+)
Alert: PAGER alert level
Depth: Shallow (<70km), Intermediate, Deep (>300km)
Status: Auto = preliminary, Reviewed = verified by seismologist
Click any row to see additional technical details.
About This Page
This page shows all earthquakes recorded by the USGS Earthquake Hazards Program during the 24-hour UTC period on December 28, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.